.. _configuration-bifrost: ======= Bifrost ======= This section covers configuration of the Bifrost service that runs on the seed host. Bifrost configuration is typically applied in ``${KAYOBE_CONFIG_PATH}/bifrost.yml``. Consult the :bifrost-doc:`Bifrost documentation <>` for further details of Bifrost usage and configuration. Bifrost installation ==================== .. note:: This section may be skipped if using an upstream Bifrost container image. The following options are used if building the Bifrost container image locally. ``kolla_bifrost_source_url`` URL of Bifrost source code repository. Default is https://opendev.org/openstack/bifrost. ``kolla_bifrost_source_version`` Version (branch, tag, etc.) of Bifrost source code repository. Default is ``{{ openstack_branch }}``, which is the same as the Kayobe upstream branch name. For example, to install Bifrost from a custom git repository: .. code-block:: yaml :caption: ``bifrost.yml`` kolla_bifrost_source_url: https://git.example.com/bifrost kolla_bifrost_source_version: downstream .. _configuration-bifrost-overcloud-root-image: Overcloud root disk image configuration ======================================= .. note:: This configuration only applies when ``overcloud_dib_build_host_images`` (set in ``${KAYOBE_CONFIG_PATH}/overcloud-dib.yml``) is changed to false. Bifrost uses Diskimage builder (DIB) to build a root disk image that is deployed to overcloud hosts when they are provisioned. The following options configure how this image is built. Consult the :diskimage-builder-doc:`Diskimage-builder documentation <>` for further information on building disk images. The default configuration builds a whole disk (partitioned) image using the selected :ref:`OS distribution ` with serial console enabled, and SELinux disabled if CentOS Stream is used. Rocky Linux 9 users should use the default method of building images with :ref:`Diskimage builder directly `. ``kolla_bifrost_dib_os_element`` DIB base OS element. Default is ``{{ os_distribution }}``. ``kolla_bifrost_dib_os_release`` DIB image OS release. Default is ``{{ os_release }}``. ``kolla_bifrost_dib_elements_default`` *Added in the Train release. Use kolla_bifrost_dib_elements in earlier releases.* List of default DIB elements. Default is ``["enable-serial-console", "vm"]``. The ``vm`` element is poorly named, and causes DIB to build a whole disk image rather than a single partition. ``kolla_bifrost_dib_elements_extra`` *Added in the Train release. Use kolla_bifrost_dib_elements in earlier releases.* List of additional DIB elements. Default is none. ``kolla_bifrost_dib_elements`` List of DIB elements. Default is a combination of ``kolla_bifrost_dib_elements_default`` and ``kolla_bifrost_dib_elements_extra``. ``kolla_bifrost_dib_init_element`` DIB init element. Default is ``cloud-init-datasources``. ``kolla_bifrost_dib_env_vars_default`` *Added in the Train release. Use kolla_bifrost_dib_env_vars in earlier releases.* DIB default environment variables. Default is ``{DIB_BOOTLOADER_DEFAULT_CMDLINE: "nofb nomodeset gfxpayload=text net.ifnames=1", "DIB_CLOUD_INIT_DATASOURCES": "ConfigDrive"}``. ``kolla_bifrost_dib_env_vars_extra`` *Added in the Train release. Use kolla_bifrost_dib_env_vars in earlier releases.* DIB additional environment variables. Default is none. ``kolla_bifrost_dib_env_vars`` DIB environment variables. Default is combination of ``kolla_bifrost_dib_env_vars_default`` and ``kolla_bifrost_dib_env_vars_extra``. ``kolla_bifrost_dib_packages`` List of DIB packages to install. Default is to install no extra packages. The disk image is built during the deployment of seed services. It is worth noting that currently, the image will not be rebuilt if it already exists. To force rebuilding the image, it is necessary to remove the file. On the seed: .. code-block:: console docker exec bifrost_deploy rm /httpboot/deployment_image.qcow2 Then on the control host: .. code-block:: console (kayobe) $ kayobe seed service deploy Example: Adding an element -------------------------- In the following, we extend the list of DIB elements to add the ``growpart`` element: .. code-block:: yaml :caption: ``bifrost.yml`` kolla_bifrost_dib_elements_extra: - "growpart" Example: Building an XFS root filesystem image ---------------------------------------------- By default, DIB will format the image as ``ext4``. In some cases it might be useful to use XFS, for example when using the ``overlay`` Docker storage driver which can reach the maximum number of hardlinks allowed by ``ext4``. In DIB, we achieve this by setting the ``FS_TYPE`` environment variable to ``xfs``. .. code-block:: yaml :caption: ``bifrost.yml`` kolla_bifrost_dib_env_vars_extra: FS_TYPE: "xfs" Example: Configuring a development user account ----------------------------------------------- .. warning:: A development user account should not be used in production. When debugging a failed deployment, it can sometimes be necessary to allow access to the image via a preconfigured user account with a known password. This can be achieved via the :diskimage-builder-doc:`devuser ` element. This example shows how to add the ``devuser`` element, and configure a username and password for an account that has passwordless sudo: .. code-block:: yaml :caption: ``bifrost.yml`` kolla_bifrost_dib_elements_extra: - "devuser" kolla_bifrost_dib_env_vars_extra: DIB_DEV_USER_USERNAME: "devuser" DIB_DEV_USER_PASSWORD: "correct horse battery staple" DIB_DEV_USER_PWDLESS_SUDO: "yes" Alternatively, the :diskimage-builder-doc:`dynamic-login element ` can be used to authorize SSH keys by appending them to the kernel arguments. Example: Installing a package ----------------------------- It can be necessary to install additional packages in the root disk image. Rather than needing to write a custom DIB element, we can use the ``kolla_bifrost_dib_packages`` variable. For example, to install the ``biosdevname`` package: .. code-block:: yaml :caption: ``bifrost.yml`` kolla_bifrost_dib_packages: - "biosdevname" .. _configuration-bifrost-image-deployment-config: Disk image deployment configuration =================================== The name of the root disk image to deploy can be configured via the ``kolla_bifrost_deploy_image_filename`` option, which defaults to ``deployment_image.qcow2``. It can be defined globally in ``${KAYOBE_CONFIG_PATH}/bifrost.yml``, or defined per-group or per-host in the Kayobe inventory. This can be used to provision different images across the overcloud. It can be necessary to deploy overcloud hosts with custom settings which can be configured during provision by the cloud-init user-data configured via the ``kolla_bifrost_deploy_image_user_data_content`` option. The defaults is an empty string. .. code-block:: yaml :caption: ``bifrost.yml`` kolla_bifrost_deploy_image_user_data_content: | users: name: myuser sudo: ALL=(ALL) NOPASSWD:ALL shell: /bin/bash passwd: lock_passwd: false timezone: "Europe/Paris" While only a single disk image can be built with Bifrost, starting from the Yoga 12.0.0 release, Kayobe supports building multiple disk images directly through Diskimage builder. Consult the :ref:`overcloud host disk image build documentation ` for more details. Ironic configuration ==================== The following options configure the Ironic service in the ``bifrost-deploy`` container. ``kolla_bifrost_enabled_hardware_types`` List of :ironic-doc:`hardware types ` to enable for Bifrost's Ironic. Default is ``["ipmi"]``. ``kolla_bifrost_extra_kernel_options`` List of :ironic-doc:`extra kernel parameters ` for Bifrost's Ironic PXE configuration. Default is none. Ironic Inspector configuration ============================== The following options configure the Ironic Inspector service in the ``bifrost-deploy`` container. ``kolla_bifrost_inspector_processing_hooks`` List of of inspector processing plugins. Default is ``{{ inspector_processing_hooks }}``, defined in ``${KAYOBE_CONFIG_PATH}/inspector.yml``. ``kolla_bifrost_inspector_port_addition`` Which MAC addresses to add as ports during introspection. One of ``all``, ``active`` or ``pxe``. Default is ``{{ inspector_add_ports }}``, defined in ``${KAYOBE_CONFIG_PATH}/inspector.yml``. ``kolla_bifrost_inspector_extra_kernel_options`` List of extra kernel parameters for the inspector default PXE configuration. Default is ``{{ inspector_extra_kernel_options }}``, defined in ``${KAYOBE_CONFIG_PATH}/inspector.yml``. When customising this variable, the default extra kernel parameters should be kept to retain full node inspection capabilities. ``kolla_bifrost_inspector_rules`` List of introspection rules for Bifrost's Ironic Inspector service. Default is ``{{ inspector_rules }}``, defined in ``${KAYOBE_CONFIG_PATH}/inspector.yml``. ``kolla_bifrost_inspector_ipmi_username`` Ironic inspector IPMI username to set via an introspection rule. Default is ``{{ ipmi_username }}``, defined in ``${KAYOBE_CONFIG_PATH}/bmc.yml``. ``kolla_bifrost_inspector_ipmi_password`` Ironic inspector IPMI password to set via an introspection rule. Default is ``{{ ipmi_password }}``, defined in ``${KAYOBE_CONFIG_PATH}/bmc.yml``. ``kolla_bifrost_inspector_lldp_switch_port_interface`` Ironic inspector network interface name on which to check for an LLDP switch port description to use as the node's name. Default is ``{{ inspector_lldp_switch_port_interface_default }}``, defined in ``${KAYOBE_CONFIG_PATH}/inspector.yml``. ``kolla_bifrost_inspector_deploy_kernel`` Ironic inspector deployment kernel location. Default is ``http://{{ provision_oc_net_name | net_ip }}:8080/ipa.kernel``. ``kolla_bifrost_inspector_deploy_ramdisk`` Ironic inspector deployment ramdisk location. Default is ``http://{{ provision_oc_net_name | net_ip }}:8080/ipa.initramfs``. ``kolla_bifrost_inspection_timeout`` Timeout of hardware inspection on overcloud nodes, in seconds. Default is ``{{ inspector_inspection_timeout }}``, defined in ``${KAYOBE_CONFIG_PATH}/inspector.yml``. ``kolla_bifrost_inspector_redfish_username`` Ironic inspector Redfish username to set via an introspection rule. Defined in ``${KAYOBE_CONFIG_PATH}/bifrost.yml``. Default is ``{{ inspector_redfish_username }}``. ``kolla_bifrost_inspector_redfish_password`` Ironic inspector Redfish username to set via an introspection rule. Defined in ``${KAYOBE_CONFIG_PATH}/bifrost.yml``. Default is ``{{ inspector_redfish_username }}``. Ironic Python Agent (IPA) configuration ======================================= .. note:: If building IPA images locally (``ipa_build_images`` is ``true``) this section can be skipped. The following options configure the source of Ironic Python Agent images used by Bifrost for inspection and deployment. Consult the :ironic-python-agent-doc:`Ironic Python Agent documentation <>` for full details. ``kolla_bifrost_ipa_kernel_upstream_url`` URL of Ironic Python Agent (IPA) kernel image. Default is ``{{ inspector_ipa_kernel_upstream_url }}``, defined in ``${KAYOBE_CONFIG_PATH}/inspector.yml``. ``kolla_bifrost_ipa_kernel_checksum_url`` URL of checksum of Ironic Python Agent (IPA) kernel image. Default is ``{{ inspector_ipa_kernel_checksum_url }}``, defined in ``${KAYOBE_CONFIG_PATH}/inspector.yml``. ``kolla_bifrost_ipa_kernel_checksum_algorithm`` Algorithm of checksum of Ironic Python Agent (IPA) kernel image. Default is ``{{ inspector_ipa_kernel_checksum_algorithm }}``, defined in ``${KAYOBE_CONFIG_PATH}/inspector.yml``. ``kolla_bifrost_ipa_ramdisk_upstream_url`` URL of Ironic Python Agent (IPA) ramdisk image. Default is ``{{ inspector_ipa_ramdisk_upstream_url }}``, defined in ``${KAYOBE_CONFIG_PATH}/inspector.yml``. ``kolla_bifrost_ipa_ramdisk_checksum_url`` URL of checksum of Ironic Python Agent (IPA) ramdisk image. Default is ``{{ inspector_ipa_ramdisk_checksum_url }}``, defined in ``${KAYOBE_CONFIG_PATH}/inspector.yml``. ``kolla_bifrost_ipa_ramdisk_checksum_algorithm`` Algorithm of checksum of Ironic Python Agent (IPA) ramdisk image. Default is ``{{ inspector_ipa_ramdisk_checksum_algorithm }}``, defined in ``${KAYOBE_CONFIG_PATH}/inspector.yml``. Inventory configuration ======================= .. note:: This feature is currently not well tested. It is advisable to use autodiscovery of overcloud servers instead. The following option is used to configure a static inventory of servers for Bifrost. ``kolla_bifrost_servers`` Server inventory for Bifrost in the :bifrost-doc:`JSON file format `. Custom Configuration ==================== Further configuration of arbitrary Ansible variables for Bifrost can be provided via the following files: * ``${KAYOBE_CONFIG_PATH}/kolla/config/bifrost/bifrost.yml`` * ``${KAYOBE_CONFIG_PATH}/kolla/config/bifrost/dib.yml`` These are both passed as extra variables files to ``ansible-playbook``, but the naming scheme provides a separation of DIB image related variables from other variables. It may be necessary to inspect the `Bifrost source code `__ for the full set of variables that may be configured. For example, to configure debug logging for Ironic Inspector: .. code-block:: yaml :caption: ``kolla/config/bifrost/bifrost.yml`` inspector_debug: true